Question

Resolver a equação X2 - 9X -5 = 0e X2 - 9X + 15 =0

Answer 1

Oi Anakalexidayra

x² - 9x - 5 = 0

delta
d² = 81 + 20 = 101
d = √101

x1 = (9 + √101)/2
x2 = (9 - √101)/2

x² - 9x + 15 = 0

delta
d² = 81 - 60 = 21
d = √21

x1 = (9 + √21)/2
x2 = (9 - √21)/2